I’ve done everything I know to do to get this to work, but I can’t get it. I opened the script editor and added it to the shelf but it said syntax error, I put the gui right next to the creator in the script editor and it still said gui not found. I’m really new to Maya and I know this script could be a huge lifesaver for me, but I can’t for the life of me figure out how to get it to show up.

Hi , I suggest you read the INstruction file that goes along with the script .
basically , you can put all the scripts file into “GMH” folder under Maya script directory in your user ’s document folder.
then just drag and drop the GMH_creator.mel file into Maya , it will run

Can it use the current mesh for hair or do we have to create a new poly mesh every time ? And suppose if the mesh is double sided then can we control not to create a hair on the other side of the mesh?Please let me know.